JP3886473B2 - Door auto closure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door auto closure suitable for locking a back door or the like of an automobile.
[0002]
[Prior art]
As a locking device for a back door of an automobile, a striker fixed to the lower side of a rear opening and a latch provided rotatably at the tip of the back door are engaged by an impact when the back door is closed. ing.
In such a locking device, when the back door is closed gently, the striker enters the notch of the latch that has been rotated halfway and is in a half-door state that is only closed temporarily. And the striker may be disengaged and the back door may open.
[0003]
Therefore, the latch motor is rotated from the half door state to the fully closed state by the closure motor to ensure the engagement between the latch and the striker and prevent the back door from being opened unexpectedly (Patent Documents 1 and 2). Patent Document 2).
However, in the above-described conventional locking device, the closure motor only rotates the latch in the direction in which it engages with the striker. To release the engagement between the latch and striker and open the back door, the outer handle Alternatively, the latch and the detent lever must be disengaged by operating the key cylinder or by operating from within the vehicle.
Further, when attempting to open the back door when the closure is operated, conventionally, a complicated link mechanism is required to open the back door after it is completely closed or to cut off the force of the closure motor.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-60371 [Patent Document 2]
Japanese Patent Laid-Open No. 2000-27511
[Problems to be solved by the invention]
In this invention, the latch and the striker are securely engaged and the safety is high, and the door opening / closing control associated with the engagement and release of the latch and the striker is not transmitted to the handle operation force, but is shared. It is an object of the present invention to provide a door auto-closure that can be electrically operated by an electric motor, and that does not require complicated levers such as a key cylinder, an actuator, or a lock lever, has a small number of parts, and has a simple structure.
[0006]
[Means for Solving the Problems]
The door auto-closure of the present invention includes a striker fixed to one of a door or a door support, and a main body mechanism provided on the other. The main body mechanism includes a latch, a latch lever interlocked with the latch, and an electric motor. A closing lever that rotates, a detent lever that engages and disengages from the latch, and an open lever that engages and disengages from the detent lever, and the latch rotates to a final tightening state through a half-door state and engages with the striker The detent lever is urged in the direction of engagement with the latch, and the rotation of the detent lever is engaged by restricting the rotation of the latch. and, wherein with the open lever is biased in a direction deviating the detent lever, when rotated in a direction against the biasing force, the tip of the Ditentoreba When the close lever is rotated in the closing direction, the latch is engaged with the latch lever and the latch in the half-door state is rotated to the final tightening state. Returning to the original position released from the latch lever , a long hole is formed in the close lever, and a pin attached to one end of a connecting bar is slidably engaged with the long hole, and the other end When the open lever is manually operated to rotate against the urging force and when the close lever is rotated from the original position to the close direction by the electric motor, pin slides along the long hole, wherein when rotated in the open direction from the original position closing lever by an electric motor, said connecting bar through the elongated hole and the pin is pulled, the open lever And rotated against the force, then, the closing lever returns to the original position.
[0007]
Using an electric motor that shifts the latch to the fully closed state, the closing lever is rotated in the opening direction, and when the engagement between the detent lever and the latch is released via the opening lever, the latch that is energized Will automatically rotate to disengage the striker and open the door.
[0008]
In addition, when the close lever is rotated in the open direction, the open lever also rotates. However, when the open lever is directly rotated, one end of the connecting bar slides along the long hole. Can be rotated independently of the closing lever.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. For convenience, in the following description, the vertical and horizontal directions are aligned with the directions in FIGS.
1 to 3 show a door auto-closure installed on a back door of an automobile.
This door auto-closure includes a striker 1 fixed to a vehicle body as a door support and a main body mechanism 2 installed at a position corresponding to the striker 1 of the back door.
The striker 1 is bent in a gate shape and is fixed so as to protrude upward on the lower side of the rear opening of the vehicle body.
[0010]
The main body mechanism 2 includes a cover 3 fixed to the back door, a latch 4 attached to the cover 3, a latch lever 5, a close lever 6, a detent lever 7, an open lever 8, and the cover 3 adjacent to the back door. And an electric motor 9 mounted on the motor.
The cover 3 is provided with a casing 10 that is exposed to the outside of the back door, and the striker entrance 11 is formed in the casing 10.
As shown in FIG. 3, the latch 4 and the latch lever 5 are pivotally supported on the housing 10 by the first shaft 12, and the detent lever 7 is latched by the second shaft 13 as shown in FIGS. 4 to 6. 4 is pivotally supported by the housing 10 so as to be adjacent to 4.
[0011]
The latch 4 is installed inside the housing 10 so as to face the striker entrance 11, and a notch 14, a first step portion 15 and a second step portion 16 are formed on the outer periphery thereof. The notch 14 has a width and a depth capable of receiving the striker 1, and one side edge thereof is a contact surface 17. The latch 4 is urged clockwise in FIG. 4 by the first coil spring 18, and in a normal state (in a full open state), the contact surface 17 crosses the striker advance inlet 11 and faces the opening side.
[0012]
The first step portion 15 is formed adjacent to the contact surface 17, the second step portion 16 is formed at a distance from the first step portion 15, and the outer periphery of the latch 4 is the second step portion. Arcs are formed on both sides of the portion 16. When the latch 4 is in the fully open state, the detent lever 7 is in contact with the arc-shaped outer periphery beyond the second step portion 16.
The latch lever 5 is attached near the upper end of the first shaft 12 and interlocks with the latch 4 to reversibly rotate from the full open state to the overrun state through the half latch state and the full latch state.
[0013]
Further, as shown in FIG. 1, a half latch switch 23 is installed on the right side of the latch lever 5 to sense that the latch lever 5 is in a half latch state and to operate the electric motor 9.
Further, on the left side of the latch lever 5, a full latch switch 24 that senses that the latch lever 5 is in a fully latched state and reversely rotates the electric motor 9 is installed.
[0014]
As shown in FIGS. 4 to 6, the locking projection 20 protrudes from the side of the detent lever 7 facing the latch 4, and the detent lever 7 is moved to the outer periphery of the latch 4 by the second coil spring 21. It is biased in the abutting direction. The latching protrusion 20 allows the latch 4 to rotate counterclockwise, but when it engages with the first step portion 15 and the second step portion 16, it faces the bias of the first coil spring 18, and the latch 4 Prevent right rotation.
Then, as shown in FIG. 5, when the locking projection 20 of the detent lever 7 is engaged with the second step portion 16, the other side edge of the notch 14 of the latch 4 blocks the striker entrance 11 halfway (half As shown in FIG. 6, when the locking projection 20 is engaged with the first step portion 15, the other side edge of the notch 14 completely closes the striker entrance 11 (full latch state).
Further, the detent lever 7 is formed with a contact piece 22 that stands upward.
[0015]
As shown in FIGS. 1 and 2, the close lever 6 has a hook portion 26 that integrally engages with and disengages from the latch lever 5 at the lower portion of the sector gear portion 25, and rotates to the cover 3 above the latch lever 5. Mounted freely.
The sector gear unit 25 meshes with a pinion 31 communicated with the output shaft of the electric motor 9, and the close lever 6 is rotated when the electric motor 9 is operated.
When the close lever 6 is in the neutral position (a in FIGS. 1 and 2), the hook portion 26 is disengaged from the latch lever 5.
[0016]
When the close lever 6 is rotated in the close direction (clockwise direction), the hook portion 26 is engaged with the latch lever 5, and the latch lever 5 is rotated counterclockwise from the half latch position, so that the close lever 6 is in the full latch position. When (b in FIG. 2) is reached, the latch lever 5 and the latch 4 interlocked with the latch lever 5 are in a full latch state.
On the other hand, when the close lever 6 rotates in the open direction (counterclockwise direction) from the neutral position, the hook portion 26 does not engage with the latch lever 5.
On the left side of the close lever 6, a full open switch 27 that detects that the close lever 6 has reached the full open position (d in FIG. 2) and reversely rotates the electric motor 9 is installed.
[0017]
The close lever 6 is formed with a protrusion 28 protruding toward the cover 3, and the protrusion 28 is slidably engaged with a guide hole 36 formed in the cover 3. Further, a neutral switch 29 that is operated by the protrusion 28 when the close lever 6 is in the neutral position is installed on the track of the protrusion 28.
The neutral switch 29 has a function of stopping the electric motor 9 by sensing that the close lever 6 has returned to the neutral position from the open side or the close side.
Further, the sector gear portion 25 of the close lever 6 is formed with an arc-shaped long hole 30 whose center of rotation is a circle.
[0018]
The open lever 8 is pivotally supported by the cover 3 on the right side of the close lever 6, one end of which is connected to the inside of the vehicle via a cable, and can be rotated by an operation from the inside of the vehicle.
Further, a pressing portion 32 that is bent so as to face the left side surface of the contact piece 22 of the detent lever 7 is formed at the other end of the open lever 8. The open lever 8 is biased by the third coil spring 33 in the direction in which the pressing portion 32 moves away from the contact piece 22 (clockwise direction).
[0019]
The open lever 8 and the close lever 6 are connected by a strip-shaped connecting bar 34.
A pin 35 is attached to one end of the connecting bar 34, and this pin 35 is slidably engaged with the long hole 30 of the close lever 6. Further, the other end of the connecting bar 34 is pivotally attached to one end of the open lever 8.
Since the open lever 8 is urged clockwise, the pin 35 is located at the right end of the long hole 30 when the close lever 6 is in the neutral position.
[0020]
When the close lever 6 is rotated in the open direction, the connecting bar 34 is pulled and moved to the left, the open lever 8 connected to the connecting bar 34 rotates counterclockwise, and the pressing portion 32 of the open lever 8 is moved. The contact piece 22 of the detent lever 7 is engaged.
Meanwhile, when the closing lever 6 is rotated to the closed direction, if you directly rotating manipulate 及 beauty open lever 8 from the inside of the vehicle, the pin 35 of the connecting bar 34 along the long hole 30 of the closing lever 6 slides and, the claw's lever 6 and the open lever 8 is not affected by each other.
[0021]
Next, the operation of the door auto closure will be described.
When the back door is open, the close lever 6 is in the neutral position as shown in FIG. 1, and the latch 4 is in the fully open state as shown in FIG.
When the back door is closed, the striker 1 collides with the contact surface 17 of the latch 4, and the latch 4 rotates counterclockwise in FIG.
When the latch 4 rotates counterclockwise, as shown in FIG. 5, the notch 14 of the latch 4 crosses the striker advance entrance 11 and the striker 1 is engaged with the notch 14. In this state, the locking projection 20 of the detent lever 7 is engaged with the second step portion 16.
[0022]
When the latch 4 rotates to the half latch state, the latch 4 contacts the half latch switch 23. Then, the electric motor 9 operates and the close lever 6 rotates in the close direction (clockwise direction). As the close lever 6 rotates clockwise, the hook portion 26 engages with the latch lever 5 and rotates the latch lever 5 counterclockwise.
The latch 4 interlocked with the latch lever 5 further rotates counterclockwise, and as shown in FIG. 6, the striker 1 is completely fitted into the back of the notch 14 and the opening of the striker advance entrance 11 is completely closed. It becomes a state.
At this time, the locking protrusion 20 of the detent lever 7 engages with the first step portion 15 of the latch 4 to restrict the rotation of the latch 4.
[0023]
When the latch 4 and the latch lever 5 are in the fully latched state, the latch lever 5 comes into contact with the full latch switch 24, the electric motor 9 rotates in the reverse direction, and the close lever 6 is moved from the full latch position shown in FIG. After c) in FIG. 2, the rotation starts counterclockwise.
When the close lever 6 reaches the neutral position, the neutral switch 29 senses and the electric motor 9 stops.
[0024]
When the electric motor 9 is opened by remote control or the like, the electric motor 9 operates and the close lever 6 rotates in the open direction (counterclockwise direction).
Then, the connecting bar 34 connected to the close lever 6 via the long hole 30 and the pin 35 moves to the left, and the open lever 8 attached to the connecting bar 34 rotates counterclockwise.
As the open lever 8 rotates, the pressing portion 32 pushes the abutment piece 22 of the detent lever 7 to the right, and rotates to the right against the force that the detent lever 7 urges. The latch 4 is released.
[0025]
Since the latch 4 and the latch lever 5 are urged in the clockwise direction, when the rotation restriction by the detent lever 7 is released, the latch 4 rotates to the full open state at once and the striker 1 can escape from the notch 14 of the latch 4. Then you can open the back door.
When the close lever 6 reaches the full open position (d in FIG. 2), the full open switch 27 detects this, and the electric motor 9 rotates in the reverse direction, and the close lever 6 starts to rotate clockwise.
[0026]
When the close lever 6 reaches the neutral position and is detected by the neutral switch 29, the electric motor 9 is stopped, and the open lever 8 and the detent lever 7 are returned to the state shown in FIGS.
The specific configuration of the door auto-closure of the present invention is not limited to the above embodiment, and the striker 1 can be installed on the door side, and the main body mechanism 2 can be installed on the door support side. It is good also as an apparatus which opens and closes doors other than a door.
[0027]
【The invention's effect】
According to the present invention, by operating the electric motor, the latch is forcibly rotated from the half latch state to the full latch state, so that the door does not open unexpectedly due to vibration or the like.
In addition, when the electric motor is reversed, the latch and striker are disengaged, so the door can be opened immediately even during locking, and an open operation by remote control is possible, The latch is pivoted in the open direction and pivoted in the close direction with the same electric motor, and no complicated levers are required, so the number of parts is small and the structure is simple.
Further, the open lever can be manually rotated independently of the close lever to open the door.
[Brief description of the drawings]
FIG. 1 is a front view of a door auto-closure showing an embodiment of the present invention.
FIG. 2 is a front view of a door auto-closure showing the movement of each lever.
FIG. 3 is a longitudinal sectional view of a door auto-closure showing an embodiment of the present invention.
FIG. 4 is a plan view of a latch and a detent lever in a fully open state.
FIG. 5 is a plan view of a latch and a detent lever in a half latch state.
FIG. 6 is a plan view of a latch and a detent lever in a full latch state.
[Explanation of symbols]
1 striker 2 body mechanism 3 cover 4 latch 5 latch lever 6 close lever 7 detent lever 8 open lever 9 electric motor 10 housing 11 striker advance 12 first shaft 13 second shaft 14 notch 15 first step portion 16 first 2 step portion 17 contact surface 18 first coil spring 20 locking projection 21 second coil spring 22 contact piece 23 half latch switch 24 full latch switch 25 sector gear portion 26 hook portion 27 full open switch 28 projection 29 neutral switch 30 length Hole 31 pinion 32 pressing portion 33 third coil spring 34 connecting bar 35 pin 36 guide hole

Claims (1)

A striker fixed to one of a door or a door support and a main body mechanism provided on the other, the main body mechanism including a latch, a latch lever interlocked with the latch, a close lever rotated by an electric motor, and the latch And a detent lever that engages and disengages with the detent lever, and an open lever that engages and disengages with the detent lever, and the latch rotates to a final tightening state through a half-door state and engages with the striker. The detent lever is urged in the direction of releasing the engagement, the detent lever is urged in the direction of engaging with the latch, and the rotation is engaged by engaging the latch in the final tightened state, and the open lever is the detent lever. and while being biased in a direction deviating, when rotated in a direction against the biasing force, the direction in which the leading end is disengaged from the latch engaged with the detent lever When the closing lever rotates in the closing direction, it engages with the latch lever to rotate the half-door latch to the final tightened state, and then returns to the original position released from the latch lever. In the door auto-closure, a long hole is formed in the close lever, a pin attached to one end of a connecting bar is slidably engaged with the long hole, and the other end is pivotally attached to the open lever, and the open When the lever is manually rotated against the urging force, and when the close lever is rotated in the closing direction from the original position by the electric motor, the pin slides along the long hole, wherein when pivoted in the open direction closing lever from its original position by an electric motor, the long hole and the connecting bar via the pin is pulled, the open lever against the urging force than once And, thereafter, the closing lever door automatic closure which is characterized in that return to the original position.

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